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[tor/release-0.2.2] Tweak bug2355_revert at suggestion from Roger
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 8e5dfe42a0230722bff07ba6ededcc0d2dbd53e7 Author: Nick Mathewson <nickm(a)torproject.org> Date: Sun Jun 19 20:58:46 2011 -0400 Tweak bug2355_revert at suggestion from Roger --- changes/bug2355_revert | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/changes/bug2355_revert b/changes/bug2355_revert index 0d2822a..2ded40a 100644 --- a/changes/bug2355_revert +++ b/changes/bug2355_revert @@ -1,6 +1,7 @@ o Minor bugfixes: - Revert the UseBridges option to its behavior before 0.2.2.28-beta. When we changed the default behavior to "use bridges if any are - listed in the torrc", we broke a number of Vidalia users. + listed in the torrc", we broke a number of users who had bridges + in their torrc files but who didn't actually want to use them. Partial resolution for bug 3354.

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[tor/release-0.2.2] Abandon rendezvous circuits on SIGNAL NEWNYM
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 010b8dd4f6e8e3c3d2e44ff589ff61cbf64b952a Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Thu Jun 9 19:56:40 2011 -0700 Abandon rendezvous circuits on SIGNAL NEWNYM --- changes/abandon-rend-circs-on-newnym | 8 ++++++++ src/or/circuituse.c | 3 ++- 2 files changed, 10 insertions(+), 1 deletions(-) diff --git a/changes/abandon-rend-circs-on-newnym b/changes/abandon-rend-circs-on-newnym new file mode 100644 index 0000000..67cb2dc --- /dev/null +++ b/changes/abandon-rend-circs-on-newnym @@ -0,0 +1,8 @@ + o Security fixes: + - Don't attach new streams to old rendezvous circuits after SIGNAL + NEWNYM. Previously, we would keep using an existing rendezvous + circuit if it remained open (i.e. if it were kept open by a + long-lived stream or if a new stream were attached to it before + Tor could notice that it was old and no longer in use and close + it). Bugfix on 0.1.1.15-rc; fixes bug 3375. + diff --git a/src/or/circuituse.c b/src/or/circuituse.c index 41c1899..48fc198 100644 --- a/src/or/circuituse.c +++ b/src/or/circuituse.c @@ -59,7 +59,8 @@ circuit_is_acceptable(circuit_t *circ, edge_connection_t *conn, return 0; } - if (purpose == CIRCUIT_PURPOSE_C_GENERAL) + if (purpose == CIRCUIT_PURPOSE_C_GENERAL || + purpose == CIRCUIT_PURPOSE_C_REND_JOINED) if (circ->timestamp_dirty && circ->timestamp_dirty+get_options()->MaxCircuitDirtiness <= now) return 0;

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[tor/release-0.2.2] Revert "Add an "auto" option to UseBridges"
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 3b41551b61a604b555891ecc7cb6f8bbde65d128 Author: Nick Mathewson <nickm(a)torproject.org> Date: Fri Jun 17 16:45:53 2011 -0400 Revert "Add an "auto" option to UseBridges" This reverts commit 507c1257a4d9c629fefc2adbad8db73607749734. --- src/or/config.c | 19 ++++--------------- src/or/or.h | 12 +----------- 2 files changed, 5 insertions(+), 26 deletions(-) diff --git a/src/or/config.c b/src/or/config.c index 8ab23a3..e0ecab2 100644 --- a/src/or/config.c +++ b/src/or/config.c @@ -376,7 +376,7 @@ static config_var_t _option_vars[] = { V(TransPort, PORT, "0"), V(TunnelDirConns, BOOL, "1"), V(UpdateBridgesFromAuthority, BOOL, "0"), - VAR("UseBridges", STRING, UseBridges_, "auto"), + V(UseBridges, BOOL, "0"), V(UseEntryGuards, BOOL, "1"), V(User, STRING, NULL), VAR("V1AuthoritativeDirectory",BOOL, V1AuthoritativeDir, "0"), @@ -3234,19 +3234,6 @@ options_validate(or_options_t *old_options, or_options_t *options, "of the Internet, so they must not set Reachable*Addresses " "or FascistFirewall."); - /* XXX023 use autobool instead. */ - if (!strcmp(options->UseBridges_, "auto")) { - options->UseBridges = (options->Bridges && - !server_mode(options) && - !options->EntryNodes); - } else if (!strcmp(options->UseBridges_, "0")) { - options->UseBridges = 0; - } else if (!strcmp(options->UseBridges_, "1")) { - options->UseBridges = 1; - } else { - REJECT("UseBridges must be 0, 1, or auto"); - } - if (options->UseBridges && server_mode(options)) REJECT("Servers must be able to freely connect to the rest " @@ -3581,8 +3568,10 @@ options_validate(or_options_t *old_options, or_options_t *options, if (validate_dir_authorities(options, old_options) < 0) REJECT("Directory authority line did not parse. See logs for details."); + if (options->UseBridges && !options->Bridges) + REJECT("If you set UseBridges, you must specify at least one bridge."); if (options->UseBridges && !options->TunnelDirConns) - REJECT("TunnelDirConns set to 0 only works with UseBridges set to 0"); + REJECT("If you set UseBridges, you must set TunnelDirConns."); if (options->Bridges) { for (cl = options->Bridges; cl; cl = cl->next) { if (parse_bridge_line(cl->value, 1)<0) diff --git a/src/or/or.h b/src/or/or.h index 456dce2..97fecd1 100644 --- a/src/or/or.h +++ b/src/or/or.h @@ -2480,17 +2480,7 @@ typedef struct { * when doing so. */ char *BridgePassword; - /** Whether we should start all circuits with a bridge. "1" means strictly - * yes, "0" means strictly no, and "auto" means that we do iff any bridges - * are configured, we are not running a server and have not specified a list - * of entry nodes. */ - char *UseBridges_; - /** Effective value of UseBridges. Will be set equally for UseBridges set to - * 1 or 0, but for 'auto' it will be set to 1 iff any bridges are - * configured, we are not running a server and have not specified a list of - * entry nodes. */ - int UseBridges; - + int UseBridges; /**< Boolean: should we start all circuits with a bridge? */ config_line_t *Bridges; /**< List of bootstrap bridge addresses. */ int BridgeRelay; /**< Boolean: are we acting as a bridge relay? We make

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[tor/release-0.2.2] Make ControlSocketsGroupWritable work with User.
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 54d7d31cba84232b50fef4287951b2c4bfa746c2 Author: Jérémy Bobbio <lunar(a)debian.org> Date: Tue Jun 14 12:18:32 2011 -0400 Make ControlSocketsGroupWritable work with User. Original message from bug3393: check_private_dir() to ensure that ControlSocketsGroupWritable is safe to use. Unfortunately, check_private_dir() only checks against the currently running user… which can be root until privileges are dropped to the user and group configured by the User config option. The attached patch fixes the issue by adding a new effective_user argument to check_private_dir() and updating the callers. It might not be the best way to fix the issue, but it did in my tests. (Code by lunar; changelog by nickm) --- src/common/util.c | 33 ++++++++++++++++++++++++++------- src/common/util.h | 3 ++- src/or/config.c | 6 ++++-- src/or/connection.c | 2 +- src/or/geoip.c | 6 +++--- src/or/rendservice.c | 2 +- src/or/rephist.c | 4 ++-- src/or/router.c | 4 ++-- 8 files changed, 41 insertions(+), 19 deletions(-) diff --git a/src/common/util.c b/src/common/util.c index 6f323dd..36aa9cc 100644 --- a/src/common/util.c +++ b/src/common/util.c @@ -1677,15 +1677,20 @@ file_status(const char *fname) * is group-readable, but in all cases we create the directory mode 0700. * If CPD_CHECK_MODE_ONLY is set, then we don't alter the directory permissions * if they are too permissive: we just return -1. + * When effective_user is not NULL, check permissions against the given user and + * its primary group. */ int -check_private_dir(const char *dirname, cpd_check_t check) +check_private_dir(const char *dirname, cpd_check_t check, const char *effective_user) { int r; struct stat st; char *f; #ifndef MS_WINDOWS int mask; + struct passwd *pw = NULL; + uid_t running_uid; + gid_t running_gid; #endif tor_assert(dirname); @@ -1724,33 +1729,47 @@ check_private_dir(const char *dirname, cpd_check_t check) return -1; } #ifndef MS_WINDOWS - if (st.st_uid != getuid()) { + if (effective_user) { + /* Lookup the user and group information, if we have a problem, bail out. */ + pw = getpwnam(effective_user); + if (pw == NULL) { + log_warn(LD_CONFIG, "Error setting configured user: %s not found", effective_user); + return -1; + } + running_uid = pw->pw_uid; + running_gid = pw->pw_gid; + } else { + running_uid = getuid(); + running_gid = getgid(); + } + + if (st.st_uid != running_uid) { struct passwd *pw = NULL; char *process_ownername = NULL; - pw = getpwuid(getuid()); + pw = getpwuid(running_uid); process_ownername = pw ? tor_strdup(pw->pw_name) : tor_strdup("<unknown>"); pw = getpwuid(st.st_uid); log_warn(LD_FS, "%s is not owned by this user (%s, %d) but by " "%s (%d). Perhaps you are running Tor as the wrong user?", - dirname, process_ownername, (int)getuid(), + dirname, process_ownername, (int)running_uid, pw ? pw->pw_name : "<unknown>", (int)st.st_uid); tor_free(process_ownername); return -1; } - if ((check & CPD_GROUP_OK) && st.st_gid != getgid()) { + if ((check & CPD_GROUP_OK) && st.st_gid != running_gid) { struct group *gr; char *process_groupname = NULL; - gr = getgrgid(getgid()); + gr = getgrgid(running_gid); process_groupname = gr ? tor_strdup(gr->gr_name) : tor_strdup("<unknown>"); gr = getgrgid(st.st_gid); log_warn(LD_FS, "%s is not owned by this group (%s, %d) but by group " "%s (%d). Are you running Tor as the wrong user?", - dirname, process_groupname, (int)getgid(), + dirname, process_groupname, (int)running_gid, gr ? gr->gr_name : "<unknown>", (int)st.st_gid); tor_free(process_groupname); diff --git a/src/common/util.h b/src/common/util.h index d657db6..b9db25c 100644 --- a/src/common/util.h +++ b/src/common/util.h @@ -292,7 +292,8 @@ typedef unsigned int cpd_check_t; #define CPD_CHECK 2 #define CPD_GROUP_OK 4 #define CPD_CHECK_MODE_ONLY 8 -int check_private_dir(const char *dirname, cpd_check_t check); +int check_private_dir(const char *dirname, cpd_check_t check, + const char *effective_user); #define OPEN_FLAGS_REPLACE (O_WRONLY|O_CREAT|O_TRUNC) #define OPEN_FLAGS_APPEND (O_WRONLY|O_CREAT|O_APPEND) typedef struct open_file_t open_file_t; diff --git a/src/or/config.c b/src/or/config.c index 44cecf3..8ab23a3 100644 --- a/src/or/config.c +++ b/src/or/config.c @@ -1025,7 +1025,8 @@ options_act_reversible(or_options_t *old_options, char **msg) /* Ensure data directory is private; create if possible. */ if (check_private_dir(options->DataDirectory, - running_tor ? CPD_CREATE : CPD_CHECK)<0) { + running_tor ? CPD_CREATE : CPD_CHECK, + options->User)<0) { tor_asprintf(msg, "Couldn't access/create private data directory \"%s\"", options->DataDirectory); @@ -1038,7 +1039,8 @@ options_act_reversible(or_options_t *old_options, char **msg) char *fn = tor_malloc(len); tor_snprintf(fn, len, "%s"PATH_SEPARATOR"cached-status", options->DataDirectory); - if (check_private_dir(fn, running_tor ? CPD_CREATE : CPD_CHECK) < 0) { + if (check_private_dir(fn, running_tor ? CPD_CREATE : CPD_CHECK, + options->User) < 0) { tor_asprintf(msg, "Couldn't access/create private data directory \"%s\"", fn); tor_free(fn); diff --git a/src/or/connection.c b/src/or/connection.c index 3f4ca1d..a9e3a74 100644 --- a/src/or/connection.c +++ b/src/or/connection.c @@ -867,7 +867,7 @@ check_location_for_unix_socket(or_options_t *options, const char *path) if (options->ControlSocketsGroupWritable) flags |= CPD_GROUP_OK; - if (check_private_dir(p, flags) < 0) { + if (check_private_dir(p, flags, options->User) < 0) { char *escpath, *escdir; escpath = esc_for_log(path); escdir = esc_for_log(p); diff --git a/src/or/geoip.c b/src/or/geoip.c index 5bb2410..c621ea8 100644 --- a/src/or/geoip.c +++ b/src/or/geoip.c @@ -970,7 +970,7 @@ geoip_dirreq_stats_write(time_t now) geoip_remove_old_clients(start_of_dirreq_stats_interval); statsdir = get_datadir_fname("stats"); - if (check_private_dir(statsdir, CPD_CREATE) < 0) + if (check_private_dir(statsdir, CPD_CREATE, get_options()->User) < 0) goto done; filename = get_datadir_fname2("stats", "dirreq-stats"); data_v2 = geoip_get_client_history(GEOIP_CLIENT_NETWORKSTATUS_V2); @@ -1209,7 +1209,7 @@ geoip_bridge_stats_write(time_t now) /* Write it to disk. */ statsdir = get_datadir_fname("stats"); - if (check_private_dir(statsdir, CPD_CREATE) < 0) + if (check_private_dir(statsdir, CPD_CREATE, get_options()->User) < 0) goto done; filename = get_datadir_fname2("stats", "bridge-stats"); @@ -1304,7 +1304,7 @@ geoip_entry_stats_write(time_t now) geoip_remove_old_clients(start_of_entry_stats_interval); statsdir = get_datadir_fname("stats"); - if (check_private_dir(statsdir, CPD_CREATE) < 0) + if (check_private_dir(statsdir, CPD_CREATE, get_options()->User) < 0) goto done; filename = get_datadir_fname2("stats", "entry-stats"); data = geoip_get_client_history(GEOIP_CLIENT_CONNECT); diff --git a/src/or/rendservice.c b/src/or/rendservice.c index a10e43f..d9a9364 100644 --- a/src/or/rendservice.c +++ b/src/or/rendservice.c @@ -569,7 +569,7 @@ rend_service_load_keys(void) s->directory); /* Check/create directory */ - if (check_private_dir(s->directory, CPD_CREATE) < 0) + if (check_private_dir(s->directory, CPD_CREATE, get_options()->User) < 0) return -1; /* Load key */ diff --git a/src/or/rephist.c b/src/or/rephist.c index 54593a0..b7341f3 100644 --- a/src/or/rephist.c +++ b/src/or/rephist.c @@ -2307,7 +2307,7 @@ rep_hist_exit_stats_write(time_t now) /* Try to write to disk. */ statsdir = get_datadir_fname("stats"); - if (check_private_dir(statsdir, CPD_CREATE) < 0) { + if (check_private_dir(statsdir, CPD_CREATE, get_options()->User) < 0) { log_warn(LD_HIST, "Unable to create stats/ directory!"); goto done; } @@ -2497,7 +2497,7 @@ rep_hist_buffer_stats_write(time_t now) smartlist_clear(circuits_for_buffer_stats); /* write to file */ statsdir = get_datadir_fname("stats"); - if (check_private_dir(statsdir, CPD_CREATE) < 0) + if (check_private_dir(statsdir, CPD_CREATE, get_options()->User) < 0) goto done; filename = get_datadir_fname2("stats", "buffer-stats"); out = start_writing_to_stdio_file(filename, OPEN_FLAGS_APPEND, diff --git a/src/or/router.c b/src/or/router.c index 68e29bb..2165e6e 100644 --- a/src/or/router.c +++ b/src/or/router.c @@ -533,12 +533,12 @@ init_keys(void) return 0; } /* Make sure DataDirectory exists, and is private. */ - if (check_private_dir(options->DataDirectory, CPD_CREATE)) { + if (check_private_dir(options->DataDirectory, CPD_CREATE, options->User)) { return -1; } /* Check the key directory. */ keydir = get_datadir_fname("keys"); - if (check_private_dir(keydir, CPD_CREATE)) { + if (check_private_dir(keydir, CPD_CREATE, options->User)) { tor_free(keydir); return -1; }

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[tor/release-0.2.2] Merge remote-tracking branch 'origin/maint-0.2.1' into maint-0.2.2
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 85d4c290d79264d334baa9e5c8fdf3b06d0b3d79 Merge: 209229f 010b8dd Author: Nick Mathewson <nickm(a)torproject.org> Date: Fri Jun 17 15:24:23 2011 -0400 Merge remote-tracking branch 'origin/maint-0.2.1' into maint-0.2.2 changes/abandon-rend-circs-on-newnym | 8 ++++++++ src/or/circuituse.c | 3 ++- 2 files changed, 10 insertions(+), 1 deletions(-)

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[tor/release-0.2.2] Make connection_printf_to_buf's behaviour sane
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 68cd0a9abeab126b3d954f060d922fd71cb945f7 Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Wed Jun 15 21:16:44 2011 -0700 Make connection_printf_to_buf's behaviour sane --- changes/fix-connection_printf_to_buf | 10 ++++++++++ src/or/control.c | 29 +++++++++++------------------ 2 files changed, 21 insertions(+), 18 deletions(-) diff --git a/changes/fix-connection_printf_to_buf b/changes/fix-connection_printf_to_buf new file mode 100644 index 0000000..b6fa092 --- /dev/null +++ b/changes/fix-connection_printf_to_buf @@ -0,0 +1,10 @@ + * Code simplifications and refactoring: + + - Make connection_printf_to_buf's behaviour sane. Its callers + expect it to emit a CRLF iff the format string ends with CRLF; + it actually emits a CRLF iff (a) the format string ends with + CRLF or (b) the resulting string is over 1023 characters long or + (c) the format string does not end with CRLF ''and'' the + resulting string is 1021 characters long or longer. Bugfix on + 0.1.1.9-alpha; fixes bug 3407. + diff --git a/src/or/control.c b/src/or/control.c index 5d2d135..2308cd6 100644 --- a/src/or/control.c +++ b/src/or/control.c @@ -481,33 +481,26 @@ decode_escaped_string(const char *start, size_t in_len_max, } /** Acts like sprintf, but writes its formatted string to the end of - * <b>conn</b>-\>outbuf. The message may be truncated if it is too long, - * but it will always end with a CRLF sequence. - * - * Currently the length of the message is limited to 1024 (including the - * ending CR LF NUL ("\\r\\n\\0"). */ + * <b>conn</b>-\>outbuf. */ static void connection_printf_to_buf(control_connection_t *conn, const char *format, ...) { -#define CONNECTION_PRINTF_TO_BUF_BUFFERSIZE 1024 va_list ap; - char buf[CONNECTION_PRINTF_TO_BUF_BUFFERSIZE]; - int r; - size_t len; + char *buf = NULL; + int len; + va_start(ap,format); - r = tor_vsnprintf(buf, sizeof(buf), format, ap); + len = tor_vasprintf(&buf, format, ap); va_end(ap); - if (r<0) { + + if (len < 0) { log_warn(LD_BUG, "Unable to format string for controller."); return; } - len = strlen(buf); - if (fast_memcmp("\r\n\0", buf+len-2, 3)) { - buf[CONNECTION_PRINTF_TO_BUF_BUFFERSIZE-1] = '\0'; - buf[CONNECTION_PRINTF_TO_BUF_BUFFERSIZE-2] = '\n'; - buf[CONNECTION_PRINTF_TO_BUF_BUFFERSIZE-3] = '\r'; - } - connection_write_to_buf(buf, len, TO_CONN(conn)); + + connection_write_to_buf(buf, (size_t)len, TO_CONN(conn)); + + tor_free(buf); } /** Write all of the open control ports to ControlPortWriteToFile */

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[tor/release-0.2.2] changelog entry for bug3369
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit e470f6a8866105c9f6b113aa8eafec5ee202c992 Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Jun 13 13:42:00 2011 -0400 changelog entry for bug3369 --- changes/bug3369 | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/changes/bug3369 b/changes/bug3369 new file mode 100644 index 0000000..9c0d0e6 --- /dev/null +++ b/changes/bug3369 @@ -0,0 +1,4 @@ + o Minor bugfixes: + - When asked about a DNS record type we don't support via a + client DNSPort, reply with NOTIMPL rather than an empty + reply. Patch by intrigeri. Fixes bug 3369; bugfix on 2.0.1-alpha.

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[tor/release-0.2.2] Fix comment typo
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 70785f87bb47e481053719f2a514bf0598c62b2d Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Thu Jun 16 02:57:58 2011 -0700 Fix comment typo --- src/or/control.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/or/control.c b/src/or/control.c index 2308cd6..2170a9b 100644 --- a/src/or/control.c +++ b/src/or/control.c @@ -98,7 +98,7 @@ static int disable_log_messages = 0; static int authentication_cookie_is_set = 0; /** If authentication_cookie_is_set, a secret cookie that we've stored to disk * and which we're using to authenticate controllers. (If the controller can - * read it off disk, it has permission to connect. */ + * read it off disk, it has permission to connect.) */ static char authentication_cookie[AUTHENTICATION_COOKIE_LEN]; /** A sufficiently large size to record the last bootstrap phase string. */

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[tor/release-0.2.2] client-side DNS proxy server: reply NOTIMPL to unsupported queries
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit 910472c5146ad3e436f1b5238570a2802662319b Author: intrigeri <intrigeri(a)boum.org> Date: Sun Jun 12 11:57:31 2011 +0200 client-side DNS proxy server: reply NOTIMPL to unsupported queries Fix for bug 3369. --- src/or/dnsserv.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/or/dnsserv.c b/src/or/dnsserv.c index 009ab5f..f2c473d 100644 --- a/src/or/dnsserv.c +++ b/src/or/dnsserv.c @@ -95,8 +95,8 @@ evdns_server_callback(struct evdns_server_request *req, void *_data) } if (!q) { log_info(LD_APP, "None of the questions we got were ones we're willing " - "to support. Sending NODATA."); - evdns_server_request_respond(req, DNS_ERR_NONE); + "to support. Sending NOTIMPL."); + evdns_server_request_respond(req, DNS_ERR_NOTIMPL); return; } if (q->type != EVDNS_TYPE_A) {

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[tor/release-0.2.2] Revert "Update man page for new UseBridges tristate behaviour."
by arma＠torproject.org 19 Jun '11

19 Jun '11

commit cabb16caa9afb95ce0bfbda0d7784f71e4c153a1 Author: Nick Mathewson <nickm(a)torproject.org> Date: Fri Jun 17 16:45:23 2011 -0400 Revert "Update man page for new UseBridges tristate behaviour." This reverts commit 40cfad1b5ae90b06eb74861a4fdc1310f8611111. --- doc/tor.1.txt | 10 +++------- 1 files changed, 3 insertions(+), 7 deletions(-) diff --git a/doc/tor.1.txt b/doc/tor.1.txt index 8aa32e8..1815a8d 100644 --- a/doc/tor.1.txt +++ b/doc/tor.1.txt @@ -708,14 +708,10 @@ The following options are useful only for clients (that is, if from the configured bridge authorities when feasible. It will fall back to a direct request if the authority responds with a 404. (Default: 0) -**UseBridges** **0**|**1**|**auto**:: - Make Tor fetch descriptors for each bridge listed in the "Bridge" +**UseBridges** **0**|**1**:: + When set, Tor will fetch descriptors for each bridge listed in the "Bridge" config lines, and use these relays as both entry guards and directory - guards. If the option is 1, bridges must be used and if no bridges are - configured Tor will not make any connections until a bridge is configured; - if it's "auto", Tor will use bridges if any are configured, otherwise it - will connect directly to the Tor network; if it's 0, bridges are not used - at all. (Defaults to auto) + guards. (Default: 0) **UseEntryGuards** **0**|**1**:: If this option is set to 1, we pick a few long-term entry servers, and try

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